You may know that you need to clean your makeup brushes once a week and toss your beauty products once they're expired, but that doesn't mean you're in the clear when it comes to having bacteria in your products. Bacteria can be sneaky, and once it gets into your makeup, it can cause a slew of problems for your skin like acne, redness and infection.

To help you keep your cosmetics free of germs, we're sharing seven sneaky ways that bacteria is getting into your makeup, and how to avoid it. Read on!

More from Beauty High:
How to Curl Your Hair Like a Pro
10 Best Makeup Removers For Every Need
Why Your At Home Blowout Isn't Working
How to Get Glowing Skin